385
ACUS11 KWNS 142336
SWOMCD
SPC MCD 142336
ILZ000-WIZ000-IAZ000-150130-
MESOSCALE DISCUSSION 0431
NWS STORM PREDICTION CENTER NORMAN OK
0636 PM CDT TUE APR 14 2026
AREAS AFFECTED...NORTHEAST IOWA INTO SOUTH-CENTRAL WISCONSIN
CONCERNING...TORNADO WATCH 109...
VALID 142336Z - 150130Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 109 CONTINUES.
SUMMARY...TORNADOES AND LARGE/VERY-LARGE HAIL REMAIN POSSIBLE THIS
EVENING, PARTICULARLY WITH DISCRETE SUPERCELL ELEMENTS. THE GREATEST
TORNADO THREAT THIS EVENING WILL LIKELY BE IN FAR EASTERN IOWA AND
NORTHERN ILLINOIS WHERE THE LOW-LEVEL JET WILL BE STRONGEST.
DISCUSSION...ROTATION REMAINS EVIDENT ON LOCAL RADAR VELOCITY DATA
WITH TWO SUPERCELLS IN SOUTHWEST WISCONSIN AND EAST-CENTRAL IOWA.
THE KDVN VAD SHOWS ENLARGED HODOGRAPHS AND 0-3 SRH APPROACHING 500
M2/S2. ADDITIONAL STRENGTHENING OF THE LOW-LEVEL JET IS EXPECTED,
ESPECIALLY IN FAR EASTERN IOWA AND NORTHERN ILLINOIS. THE KDVN
OBSERVED SOUNDING FROM 21Z ALSO SHOWED A NEAR 8 C/KM MID-LEVEL LAPSE
RATE AND 52 KTS OF EFFECTIVE SHEAR. LARGE TO VERY-LARGE HAIL WILL
REMAIN POSSIBLE WITH ANY SUPERCELL. THE TORNADO THREAT WILL
SIMILARLY BE CONTINGENT ON MAINTAINING A DISCRETE STORM MODE. THE
SOUTHERN SUPERCELL WILL BE MOVING INTO THE BETTER LOW-LEVEL SHEAR
ENVIRONMENT WITH TIME. A STRONG TORNADO WOULD BE POSSIBLE WITH ANY
DISCRETE STORM WITHIN THAT ENVIRONMENT.
FARTHER NORTH INTO SOUTHERN WISCONSIN, ANOTHER ROUND OF SEVERE
STORMS IS EXPECTED IN THE NEXT 2-3 HOURS. TORNADOES AND
LARGE/VERY-LARGE HAIL WILL ALSO BE POSSIBLE, THOUGH STORM
INTERACTION ARE MORE LIKELY HERE AS WELL AS POTENTIAL IMPACTS FROM
EARLIER SUPERCELL OUTFLOW.
..WENDT.. 04/14/2026
..PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT
ATTN...WFO...LOT...MKX...DVN...ARX...
LAT...LON 41909044 41929088 41979129 42179139 42499126 43169041
43298946 43278936 42378883 42008898 41898968 41909044
MOST PROBABLE PEAK TORNADO INTENSITY...140-170 MPH
MOST PROBABLE PEAK WIND GUST...65-80 MPH
MOST PROBABLE PEAK HAIL SIZE...2.75-4.25 IN
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page